HWH error code LED OFF 33
Control-box LED 33 (green, 50-psi pressure-switch input) not lit while the pump runs — shuttle valve not shifting; the 50-psi switch, its wiring, or the control box is at fault.
What to check, and in what order, is in the app. The flow HWH 625 / 625S / 725 — leveling code & indicator lookup walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- HWH625.txt
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